Congress is gearing up to subpoena Nvidia CEO Jensen Huang to answer their questions about his affair with an alleged Chinese spy, Bloomberg reports, citing two House Republicans. 

The report comes a week after House Republicans Brian Mast, John Moolenaar, and Rick Crawford sent a letter to Huang asking him to appear before their committees for a joint, closed-door briefing in regards to his relations with Alice Huang, the Megaspeed executive and suspected Chinese spy.

House China committee Chairman Moolenaar said Wednesday on Fox Business that Huang has until the end of the day to respond to the request. If he doesn’t agree to the briefing, he’ll likely be subpoenaed, said Moolenaar.

Mast, who chairs the House Foreign Affairs Committee, on Wednesday said his committee is preparing a subpoena for Huang to send if he doesn’t respond. 

Nvidia did not immediately respond to TechCrunch’s request for comment.